Hello John, The error that I see is that the directory does not exist. This happens when the unit does not have a ieee80211 card available, or if the kernel does not have wifi suppor. In both cases, /sys/class/ieee80211 does not exist and the script echoes an error to the screen that does not really indicate a problem.
In our particular case, it was discovered on a unit that can be shipped with and without WiFi. So depending on the presence of the hardware, this error appears. Since the error is not relevant, redirecting stderr to /dev/null will cause the ls to return '', which causes the shell script to not do anything in the for loop. Nothing will be done by the mac80211.sh script, and the system continues as normal. Kind regards, Michel Stam -----Original Message----- From: openwrt-devel [mailto:openwrt-devel-boun...@lists.openwrt.org] On Behalf Of John Crispin Sent: Friday, October 03, 2014 19:32 PM To: openwrt-devel@lists.openwrt.org Subject: Re: [OpenWrt-Devel] [PATCH] mac80211: remove error from detectscript On 02/10/2014 15:28, Michel Stam wrote: > Signed-off-by: Michel Stam <m.s...@fugro.nl> > --- > package/kernel/mac80211/files/lib/wifi/mac80211.sh | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/package/kernel/mac80211/files/lib/wifi/mac80211.sh > b/package/kernel/mac80211/files/lib/wifi/mac80211.sh > index a3b2199..2af4dc5 100644 > --- a/package/kernel/mac80211/files/lib/wifi/mac80211.sh > +++ b/package/kernel/mac80211/files/lib/wifi/mac80211.sh > @@ -65,7 +65,7 @@ detect_mac80211() { > [ -n "$type" ] || break > devidx=$(($devidx + 1)) > done > - for dev in $(ls /sys/class/ieee80211); do > + for dev in $(ls /sys/class/ieee80211 2>/dev/null); do what error do you see ? if you see an error we should try to fix that rather than supressing it > found=0 > config_foreach check_mac80211_device wifi-device > [ "$found" -gt 0 ] && continue _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
